JPH0412001A - 水素を含むガス混合物から一酸化炭素を除去する方法および装置 - Google Patents
水素を含むガス混合物から一酸化炭素を除去する方法および装置Info
- Publication number
- JPH0412001A JPH0412001A JP2411527A JP41152790A JPH0412001A JP H0412001 A JPH0412001 A JP H0412001A JP 2411527 A JP2411527 A JP 2411527A JP 41152790 A JP41152790 A JP 41152790A JP H0412001 A JPH0412001 A JP H0412001A
- Authority
- JP
- Japan
- Prior art keywords
- hydrogen
- carbon monoxide
- gas
- sulfur
- product
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910002091 carbon monoxide Inorganic materials 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000007789 gas Substances 0.000 title claims description 87
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims description 51
- 229910052739 hydrogen Inorganic materials 0.000 title claims description 48
- 239000001257 hydrogen Substances 0.000 title claims description 48
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims description 45
- 239000000203 mixture Substances 0.000 title claims description 24
- 239000000047 product Substances 0.000 claims abstract description 41
- 239000012466 permeate Substances 0.000 claims abstract description 29
- 239000010409 thin film Substances 0.000 claims abstract description 10
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 6
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 6
- 229910001868 water Inorganic materials 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000446 fuel Substances 0.000 claims abstract description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 38
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 27
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 19
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 17
- 239000011787 zinc oxide Substances 0.000 claims description 17
- 239000003054 catalyst Substances 0.000 claims description 15
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 14
- 239000012528 membrane Substances 0.000 claims description 14
- 229910052717 sulfur Inorganic materials 0.000 claims description 14
- 239000011593 sulfur Substances 0.000 claims description 14
- 229940059867 sulfur containing product ectoparasiticides Drugs 0.000 claims description 10
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 7
- 150000001412 amines Chemical class 0.000 claims description 4
- 238000006477 desulfuration reaction Methods 0.000 claims 5
- 230000023556 desulfurization Effects 0.000 claims 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 2
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 claims 2
- 229910052799 carbon Inorganic materials 0.000 claims 2
- 238000005336 cracking Methods 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- 238000005201 scrubbing Methods 0.000 claims 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 229920001577 copolymer Polymers 0.000 abstract description 3
- 239000012510 hollow fiber Substances 0.000 abstract description 3
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 abstract description 2
- 239000008246 gaseous mixture Substances 0.000 abstract 7
- 239000004215 Carbon black (E152) Substances 0.000 abstract 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 11
- 238000005984 hydrogenation reaction Methods 0.000 description 5
- 150000002431 hydrogen Chemical class 0.000 description 4
- -1 etc. Polymers 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- LNAZSHAWQACDHT-XIYTZBAFSA-N (2r,3r,4s,5r,6s)-4,5-dimethoxy-2-(methoxymethyl)-3-[(2s,3r,4s,5r,6r)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6r)-4,5,6-trimethoxy-2-(methoxymethyl)oxan-3-yl]oxyoxane Chemical compound CO[C@@H]1[C@@H](OC)[C@H](OC)[C@@H](COC)O[C@H]1O[C@H]1[C@H](OC)[C@@H](OC)[C@H](O[C@H]2[C@@H]([C@@H](OC)[C@H](OC)O[C@@H]2COC)OC)O[C@@H]1COC LNAZSHAWQACDHT-XIYTZBAFSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 101000617550 Dictyostelium discoideum Presenilin-A Proteins 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical group CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 235000010980 cellulose Nutrition 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 229960004667 ethyl cellulose Drugs 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 229960002900 methylcellulose Drugs 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000412 polyarylene Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006149 polyester-amide block copolymer Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 238000000629 steam reforming Methods 0.000 description 1
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 150000003463 sulfur Chemical class 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
- C01B3/501—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by diffusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
- C01B3/56—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids
- C01B3/58—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids including a catalytic reaction
- C01B3/586—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids including a catalytic reaction the reaction being a methanation reaction
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K3/00—Modifying the chemical composition of combustible gases containing carbon monoxide to produce an improved fuel, e.g. one of different calorific value, which may be free from carbon monoxide
- C10K3/02—Modifying the chemical composition of combustible gases containing carbon monoxide to produce an improved fuel, e.g. one of different calorific value, which may be free from carbon monoxide by catalytic treatment
- C10K3/04—Modifying the chemical composition of combustible gases containing carbon monoxide to produce an improved fuel, e.g. one of different calorific value, which may be free from carbon monoxide by catalytic treatment reducing the carbon monoxide content, e.g. water-gas shift [WGS]
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
- C01B2203/0405—Purification by membrane separation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
- C01B2203/0435—Catalytic purification
- C01B2203/0445—Selective methanation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
- C01B2203/0465—Composition of the impurity
- C01B2203/047—Composition of the impurity the impurity being carbon monoxide
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Hydrogen, Water And Hydrids (AREA)
- Industrial Gases (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8916869 | 1989-12-20 | ||
| FR8916869A FR2655873B1 (fr) | 1989-12-20 | 1989-12-20 | Procede et dispositif d'elimination par permeation du monoxyde de carbone dans un melange gazeux a base d'hydrogene. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0412001A true JPH0412001A (ja) | 1992-01-16 |
Family
ID=9388740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2411527A Pending JPH0412001A (ja) | 1989-12-20 | 1990-12-18 | 水素を含むガス混合物から一酸化炭素を除去する方法および装置 |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0434562B1 (es) |
| JP (1) | JPH0412001A (es) |
| CA (1) | CA2032560C (es) |
| DE (1) | DE69021851T2 (es) |
| ES (1) | ES2077049T3 (es) |
| FR (1) | FR2655873B1 (es) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003522087A (ja) * | 1998-10-14 | 2003-07-22 | アイダテック・エルエルシー | 燃料処理装置 |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2270701A (en) * | 1992-09-08 | 1994-03-23 | H & G Process Contracting | Integrated electricity and carbon monoxide production |
| DE19618816C2 (de) * | 1996-05-10 | 1999-08-26 | Forschungszentrum Juelich Gmbh | Membranreaktor zur Erzeugung von CO- und CO¶2¶-freiem Wasserstoff |
| GB9611491D0 (en) * | 1996-06-01 | 1996-08-07 | Johnson Matthey Plc | Gas separation devices |
| US6494937B1 (en) | 2001-09-27 | 2002-12-17 | Idatech, Llc | Hydrogen purification devices, components and fuel processing systems containing the same |
| US5997594A (en) * | 1996-10-30 | 1999-12-07 | Northwest Power Systems, Llc | Steam reformer with internal hydrogen purification |
| US6537352B2 (en) | 1996-10-30 | 2003-03-25 | Idatech, Llc | Hydrogen purification membranes, components and fuel processing systems containing the same |
| US6783741B2 (en) | 1996-10-30 | 2004-08-31 | Idatech, Llc | Fuel processing system |
| US7195663B2 (en) | 1996-10-30 | 2007-03-27 | Idatech, Llc | Hydrogen purification membranes, components and fuel processing systems containing the same |
| US6376113B1 (en) | 1998-11-12 | 2002-04-23 | Idatech, Llc | Integrated fuel cell system |
| CN1076390C (zh) * | 1997-01-31 | 2001-12-19 | 中国科学院大连化学物理研究所 | 一种提高一氧化碳气体热质的方法 |
| CN1065852C (zh) * | 1997-01-31 | 2001-05-16 | 中国科学院大连化学物理研究所 | 钯/陶瓷复合膜反应器中的气相催化脱氢和加氢耦合反应 |
| US5955044A (en) * | 1997-09-30 | 1999-09-21 | Johnson Matthey Inc. | Method and apparatus for making ultra-pure hydrogen |
| DE19904401C2 (de) * | 1999-02-04 | 2001-05-17 | Daimler Chrysler Ag | Wasserstofferzeugungsanlage mit Membranreaktor |
| US6465118B1 (en) | 2000-01-03 | 2002-10-15 | Idatech, Llc | System and method for recovering thermal energy from a fuel processing system |
| US6451464B1 (en) | 2000-01-03 | 2002-09-17 | Idatech, Llc | System and method for early detection of contaminants in a fuel processing system |
| AU6078801A (en) * | 2000-05-23 | 2001-12-03 | Erik Middelman | Purification of gas mixtures |
| US6569227B2 (en) | 2001-09-27 | 2003-05-27 | Idatech, Llc | Hydrogen purification devices, components and fuel processing systems containing the same |
| US7601302B2 (en) | 2005-09-16 | 2009-10-13 | Idatech, Llc | Self-regulating feedstock delivery systems and hydrogen-generating fuel processing assemblies and fuel cell systems incorporating the same |
| EP1938415B1 (en) | 2005-09-16 | 2014-05-14 | Dcns Sa | Self-regulating feedstock delivery system and hydrogen-generating fuel processing assembly incorporating the same |
| US7972420B2 (en) | 2006-05-22 | 2011-07-05 | Idatech, Llc | Hydrogen-processing assemblies and hydrogen-producing systems and fuel cell systems including the same |
| US7939051B2 (en) | 2006-05-23 | 2011-05-10 | Idatech, Llc | Hydrogen-producing fuel processing assemblies, heating assemblies, and methods of operating the same |
| US8262752B2 (en) | 2007-12-17 | 2012-09-11 | Idatech, Llc | Systems and methods for reliable feedstock delivery at variable delivery rates |
| EP2910523A1 (en) * | 2014-02-21 | 2015-08-26 | Haldor Topsoe A/S | Methanation process with a passive heat exchange medium |
| US10476093B2 (en) | 2016-04-15 | 2019-11-12 | Chung-Hsin Electric & Machinery Mfg. Corp. | Membrane modules for hydrogen separation and fuel processors and fuel cell systems including the same |
| US11712655B2 (en) | 2020-11-30 | 2023-08-01 | H2 Powertech, Llc | Membrane-based hydrogen purifiers |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH237947A (fr) * | 1940-09-06 | 1945-06-15 | Drouilly Eugene Justin | Procédé et dispositif pour l'enrichissement de gaz combustibles. |
| US3251652A (en) * | 1962-05-17 | 1966-05-17 | Engelhard Ind Inc | Process for producing hydrogen |
| US4732583B1 (en) * | 1984-12-03 | 1990-05-15 | Gas separation | |
| GB2194958B (en) * | 1986-09-11 | 1991-03-27 | Humphreys & Glasgow Ltd | Synthesis gas production using air |
-
1989
- 1989-12-20 FR FR8916869A patent/FR2655873B1/fr not_active Expired - Fee Related
-
1990
- 1990-12-18 CA CA 2032560 patent/CA2032560C/en not_active Expired - Fee Related
- 1990-12-18 JP JP2411527A patent/JPH0412001A/ja active Pending
- 1990-12-20 ES ES90403690T patent/ES2077049T3/es not_active Expired - Lifetime
- 1990-12-20 DE DE1990621851 patent/DE69021851T2/de not_active Expired - Fee Related
- 1990-12-20 EP EP19900403690 patent/EP0434562B1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003522087A (ja) * | 1998-10-14 | 2003-07-22 | アイダテック・エルエルシー | 燃料処理装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2655873B1 (fr) | 1992-04-10 |
| CA2032560C (en) | 2000-08-01 |
| DE69021851D1 (de) | 1995-09-28 |
| DE69021851T2 (de) | 1996-01-11 |
| ES2077049T3 (es) | 1995-11-16 |
| EP0434562B1 (en) | 1995-08-23 |
| FR2655873A1 (fr) | 1991-06-21 |
| CA2032560A1 (en) | 1991-06-21 |
| EP0434562A1 (en) | 1991-06-26 |
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